ESET Secure Authentication On-Prem – Table of Contents

Supported Operating Systems

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Below is a list of supported operating systems (OS) in general. For component-specific OS support, refer to installation requirements.

Server operating systems (server OS)

•Windows Server 2012 R2

•Windows Server 2012 R2 Essentials

•Windows Server 2016

•Windows Server 2016 Essentials

•Windows Server 2019

•Windows Server 2019 Essentials

•Windows Server 2022

•Windows Server 2025

Client operating systems (client OS)

•Windows 10 (from version 1607, including 22H2 Update)

•Windows 11 (including 25H2 Update)

ESA Core and RADIUS on a client operating system (client OS)

Installing ESA Core (Authentication Server) and RADIUS Server on a client OS in the list of Supported Operating Systems might not be in alignment with Microsoft's licensing policy. Consult Microsoft's licensing policy or your software supplier for details. Moreover, a client OS may present other limitations (for instance, the number of maximum concurrent TCP connections) compared to an server OS.

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